fielder tries to tag runner out of basepath

RulesMLB Umpire Manual

OUT OF THE BASEPATH

Rule 5.09(b)(1): When determining whether a base runner should be called out under Official Baseball Rule 5.09(b)(1), so long as the umpire determines that a play is being made on the runner and an attempt to tag is occurring, i.e. the fielder is moving to tag the runner, no physical tag attempt is required to…